package com.study.springcloud.controller;

import com.study.springcloud.entities.CommonResult;
import com.study.springcloud.entities.Payment;
import com.study.springcloud.lb.LoadBanlancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
@Slf4j
public class OrderController {
    //单机，地址写死
//    public static final String PAYMENT_URL="http://localhost:8001";

    //集群
    public static final String PAYMENT_URL="http://CLOUD-PAYMENT-SERVICE";

//    @Resource
//    private LoadBanlancer loadBanlancer;

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }

    @GetMapping("consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id")Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }

//    @GetMapping("/consumer/payment/lb")
//    public String getPaymentLb(){
//        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
//        if (instances == null || instances.size() <= 0) {
//            return null;
//        }
//        ServiceInstance instance = loadBanlancer.instance(instances);
//        URI uri = instance.getUri();
//        return restTemplate.getForObject(uri+"/payment/lb",String.class);
//
//    }

    // ====================> zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin()
    {
        String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/", String.class);
        return result;
    }
}
